Various Motor Control Development Support Tools for the RX24T and
RX23T Available

SANTA CLARA, Calif. — (BUSINESS WIRE) — March 23, 2016 —
Renesas Electronics Corporation (TSE: 6723), a premier supplier of
advanced semiconductor solutions, today expanded its robust lineup of
32-bit microcontrollers (MCUs) with the RX24T Group. Using the RXv2 CPU
core, the new MCUs deliver double the performance from the RX23T, 30
percent reduced development time, and features additional instructions
designed to accelerate performance and energy efficiency in industrial
equipment, office equipment, and household appliances.

The new product lineup comprises a total of six new devices with pin
counts from 80- to 100-pin and on-chip flash memory capacities from 128
kilobytes (KB) to 256 KB. The RX24T Group enables simultaneous inverter
control of multiple motors with a single chip and are ideally suited for
permanent magnet AC (PMAC) motor1 control in a variety of
applications.

The RX24T Group offers up to 160 DMIPs, including dedicated analog
functions to optimize the inverters Bill of Material (BoM) and
furthermore increases the arithmetic operation and expands the
motor-control peripheral functions of the cost-optimized RX23T.

In addition, Renesas plans to deliver a 24 V motor control evaluation kit2,
that can support both the single-motor control RX23T and the multi-motor
control RX24T.

However, this has also created numerous concerns for system
manufacturers who want to quickly release products for this new market
but who lack the necessary development workforce and motor control
expertise. In addition, many types of equipment are becoming more
compact, reducing the amount of space available for printed circuit
boards. Finding ways to reduce the number of components in order to
integrate multiple boards and reduce their number has therefore become a
major issue.

In response to this demand for better energy efficiency,
higher-precision control, reduced board size, and shorter development
time, Renesas has developed the RX24T Group, a high-speed,
high-functionality 32-bit Group of MCUs that enables control of multiple
motors with a single chip.

Key features of the new RX24T Group of MCUs:

(1) With on-chip FPU functionality for faster
code execution, RX24T supports high-performance multi-motor control for
development of platforms with a broad range of products

The RX24T incorporates the RXv2 CPU core with a five-stage pipeline, a
floating point unit (FPU4) and DSP functions, executing
32-bit multiply within a single instruction to improve algorithm
calculation accuracy. Effectively, the RX24T running at 80 MHz has
similar performance levels of a comparable 100MHz MCU. The on-chip FPU
functionality provides faster implementation of calculation-intensive
algorithms with wide dynamic range.

The FPU enables the overall code to be reduced, and overall software
implementations are executed much faster as no scaling or saturation
occurred. It offers a higher accuracy than the integer implementation as
the real physical units are used in the embedded software.

In addition, the FPU guarantees a faster computation time for PI
controllers and estimators. The FPU simplifies debugging and can reduce
development time by approximately 30 percent while reducing the rate of
software glitches.

In addition, the RX24T Group of MCUs maintains excellent compatibility
with the RX23T Group, allowing reuse of existing hardware and software
assets, boosts CPU performance from 40 MHz to 80 MHz and Flash capacity
from 128 KB to 256 KB, and doubles the power of the on-chip motor
control–related peripheral functions (timers, A/D converters, and
operational amplifiers) to enable control of multiple Permanent Magnet
AC motors using a single chip.

(2) Renesas’ flexible motor control development
solution and tools allow one-day evaluation of sensorless vector control

Developing new motor-enabled systems for a rapidly growing market
demands short application development cycles and specialized expertise.
Renesas has developed a flexible 24 V motor control evaluation kit (Note
2) for use with the RX23T and RX24T. It enables developers to start
evaluating motor control applications quickly, allowing development work
to get underway with less effort. The kit includes a CPU card, a
low-voltage inverter, a PMAC motor with sensorless vector control driver
software5, and sample demos.

The kit also includes an in-circuit scope (ICS), a RAM variable waveform
display tool that is indispensable in reducing the development workload,
provides safe debugging and substantially shortens the time needed for
evaluation. An intuitive auto tuning tool lets users tune their own
motor in less than a minute, significantly simplifying development and
eliminating typical trial-and-error methods. Software and evaluation
tools include support for CS+ and e2 studio integrated development
environments, a code generation support tool, C compilers, debuggers,
and flash memory programmers.

In addition, the RX24T Starter Kit6 will also be available to
provide a complete development environment for initial implementation,
including a reference board populated with the RX24T and an MCU
evaluation environment.

(3) Fewer external components for smaller
printed circuit boards

As applications become more compact, print circuit boards (PCBs) sizes
have shrunk, resulting in strong demand for MCUs that integrate the
functions of external components. The RX24T integrates on-chip external
circuits required by inverter control systems, such as op-amps
supporting simultaneous four-channel amplification of three-shunt and
one-shunt currents, comparators capable of overcurrent detection of
amplified current, sample and hold circuits that can handle up to five
channels simultaneously, such as three-shunt currents, and DataFlash for
storing log and setting files. This dramatically reduces the mounting
area needed on the PCBs.

The RX24T and RX23T also incorporate an automatic PWM signals shutdown
to ensure the protection of the three-phase bridges; the module is
called Port Output Enable (POE) and set the signals in high impedance
state to secure the inverter.

Pricing and Availability

Samples of the RX24T are available now. Pricing varies depending on
memory capacity, package and number of pins. For example, samples of the
R5F524T8ADFN MCU, with an 80-pin package and 128 KB of on-chip flash
memory, are priced at US$2.40 per 10K pcs/lot. Mass production has begun
and is expected to reach a volume of 500,000 units per month by July
2017. (Pricing and availability are subject to change without notice.)

Renesas Electronics Corporation (TSE: 6723), the world’s number one
supplier of microcontrollers, is a premier supplier of advanced
semiconductor solutions including microcontrollers, SoC solutions and a
broad-range of analog and power devices. Business operations began as
Renesas Electronics in April 2010 through the integration of NEC
Electronics Corporation (TSE:6723) and Renesas Technology Corp., with
operations spanning research, development, design and manufacturing for
a wide range of applications. Headquartered in Japan, Renesas
Electronics has subsidiaries in 20 countries worldwide. More information
can be found at
www.renesas.com.

(Remarks) SuperFlash memory technology used in Renesas Electronics'
RX24T MCUs is licensed from Silicon Storage Technology Inc. SuperFlash
is a registered trademark of Silicon Storage Technology in the U.S.,
Japan, and other countries. All registered trademarks or trademarks are
the property of their respective owners.

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1 Also known as brushless DC (BLDC) motor.

2 Renesas Solution Starter Kit—24 V Motor Control Evaluation
Systems for RX23T (Motor RSSK for RX23T): A development toolkit
including a 24 V inverter board, a CPU board populated with the RX23T,
and a PMAC motor. It allows developers to get started right away with
motor control using Renesas MCUs. A CPU card populated with the RX24T is
available separately.

3 Motor efficiency classes are stipulated in IEC 60034-30, a
standard issued by the International Electrotechnical Commission (IEC),
an international standards organization. In order from the highest
efficiency, they are IE3 (premium efficiency), IE2 (high efficiency),
and IE1 (standard efficiency).

4 A floating point unit (FPU) is a dedicated functional unit
that performs floating-point calculations. Thanks to the FPU, the
overall software code implementation is strongly reduced in terms of
code size, the source code is becoming easy to maintain.

5 Motor control software, the In-Circuit Scope (ICS) RAM
variable waveform display tool, and other software tools are available
for download on the Renesas website.

6 Renesas Starter Kits (RSKs) are low-cost development
toolkits. They provide a user-friendly development environment for
evaluation of Renesas MCUs. The supplied emulator and integrated
development environment can be used for coding and debugging.